Question

37)Into a 15.00-liter container at 25°C are placed 1.00 moles of O2 gas and 3.00 moles of solid C (graphite). If the carbon and oxygen react completely to form CO(g), what will be the final pressure in the container at 25°C? a) 0.274 atm b) 1.00 atm c) 4.89 atm d) 1.63 atm e) 3.26 atm

39) N2 (g) + 3H2 (g) 2NH3 (g). If a 3.4 L flask is first charged with 1.2 atm of nitrogen, then hydrogen is added until the total pressure reaches 4.0 atm, what is the maximum pressure of ammonia that can be produced at a constant 50 o C? a) 1.2 atm b) 1.9 atm c) 2.4 atm d) 2.7 atm e) 3.6 atm

Answer #1

37)

2 C(s) + O2 (g) —> 2 CO(g)

mol of CO formed = 2*mol of O2

= 2*1.00 mol

= 2.00 mol

Initially there were 1 mol of gas but now there are 2 mol of gas

So, pressure will double

Lets find the initial pressure of gas:

Given:

V = 15.0 L

n = 1.00 mol (this is initial mol of gas)

T = 25.0 oC

= (25.0+273) K

= 298 K

use:

P * V = n*R*T

P * 15 L = 1 mol* 0.08205 atm.L/mol.K * 298 K

P = 1.630 atm

So,

final number of mol of gas = 2*1.630 atm

= 3.26 atm

Answer: e

I am allowed to answer only 1 question at a time

• When 0.5 moles of a gas is placed in a container at 50 °C,
it exerts a pressure of 750 mmHg. What is the volume of the
container? (R = 0.0821 L.atm/mol.K)
• An 18 liter container holds 16.00 grams of a gas at 45 °C.
What is the pressure in the container? (molar mass of the gas = 32)
(R = 0.0821 L.atm/mol.K)
• How many moles of hydrogen gas must be placed in a 20 liter
container...

How many milliliters of O2 gas at 25 ∘C and 1.00 atm pressure
are obtained by the thermal decomposition of 0.460 g of KMnO4? The
balanced equation for the reaction is
2KMnO4(s)→K2MnO4(s)+MnO2(s)+O2(g).

please answear each question
1)At equilibrium, ________.
a)the rates of the forward and reverse reactions are equal
b)the value of the equilibrium constant is 1
c)all chemical reactions have ceased
d)the rate constants of the forward and reverse reactions are
equal
e)the limiting reagent has been consumed
2)The equilibrium-constant expression depends on the ________ of
the reaction.
a)
stoichiometry
b)
mechanism
c)
the quantities of reactants and products initially present
d)
temperature
e)
stoichiometry and mechanism
3)Given the following reaction...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 7 minutes ago

asked 42 minutes ago

asked 49 minutes ago

asked 56 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago